Chennai Petroleum Corporation Limited (CPCL)  has posted revenue from operations at Rs. 18,683 crore for the quarter ended June 30, 2025,, compared to Rs. 20,361 crore during the same period last year. In Q1 FY26, CPCL reported a loss before tax of Rs. 80 crore and a loss after tax of Rs. 57 crore, as against a profit before tax of Rs. 470 crore and Profit after tax of Rs. 343 crore in Q1 of the previous financial year. 

Chennai Petroleum Corporation Limited (CPCL) recorded a crude throughput of 2.981 million metric tonnes (MMT) for the quarter ended June 30, 2025, as compared to 2.830 MMT in the corresponding quarter of the previous financial year, with a capacity utilisation of 114%. This was further supported by best-ever distillate yield of about 80% and excellent performance on the energy front, demonstrating continued operational efficiency. 

The Gross Refining Margin (GRM) for the quarter was US $3.22 per barrel, down from US $6.33 per barrel in the corresponding period last year. This decline was primarily due to inventory losses on crude oil and finished products of US $1.9 per barrel as against inventory gain of US $1.1 per barrel in Q1 of the previous financial year. 

On a consolidated basis, the loss after tax stood at Rs. 40 crore, compared to a consolidated profit after tax of Rs. 357 crore in Q1 FY2024–25.